There is absolutely no chance for this company to reduce the price of iridium before you die.
For now, even the cost per kilogram of a payload launched in an Earth orbit is greater than the price of iridium.
The cost of the energy for the round-trip to an asteroid per kilogram of brought back substance would be much greater.
Even this transportation cost would be dwarfed by the cost of the energy and of the chemical reactants needed to extract on the surface of an asteroid one kilogram of iridium from a thousand tons of ore, which would normally consist of iron-nickel-cobalt alloy, which is very hard to process, either mechanically or thermally.
For now, even the cost per kilogram of a payload launched in an Earth orbit is greater than the price of iridium.
The cost of the energy for the round-trip to an asteroid per kilogram of brought back substance would be much greater.
Even this transportation cost would be dwarfed by the cost of the energy and of the chemical reactants needed to extract on the surface of an asteroid one kilogram of iridium from a thousand tons of ore, which would normally consist of iron-nickel-cobalt alloy, which is very hard to process, either mechanically or thermally.